本文介绍了如何使用Java SDK自定义人脸检索接口,对指定的人脸图片进行自定义人脸检索。
功能描述
自定义人脸检索根据您输入的待识别人脸图片(face),在指定人脸库(group)中查找并返回最相似的Top 5个体(person),返回的Top 5个体按照相似度从大到小排序。
检索人脸时,必须指定要检索的分组信息(最多指定一个分组)。关于参数的详细说明,请参见自定义人脸检索API文档。
您需要使用内容安全的API接入地址,调用本SDK接口。关于API接入地址的信息,请参见接入地址(Endpoint)。
前提条件
安装Java依赖。关于安装Java依赖的具体操作,请参见安装Java依赖。
说明请一定按照安装Java依赖页面中的版本安装,否则会导致调用失败。
如果使用本地文件或者二进制文件检测,请下载并在项目工程中引入Extension.Uploader工具类。
人脸图片检索(URL)代码示例
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.green.model.v20180509.ImageSyncScanRequest;
import com.aliyuncs.http.FormatType;
import com.aliyuncs.http.HttpResponse;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;
/**
* 人脸检索。
* @author
* @date 2018/06/25
*/
public class FaceScanRequestSample {
public static void main(String[] args) throws Exception {
/**
* 阿里云账号AccessKey拥有所有API的访问权限,建议您使用RAM用户进行API访问或日常运维。
* 常见获取环境变量方式:
* 方式一:
* 获取RAM用户AccessKey ID:System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
* 获取RAM用户AccessKey Secret:System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
* 方式二:
* 获取RAM用户AccessKey ID:System.getProperty("ALIBABA_CLOUD_ACCESS_KEY_ID");
* 获取RAM用户AccessKey Secret:System.getProperty("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
*/
DefaultProfile profile = DefaultProfile.getProfile(
"cn-shanghai",
"建议从环境变量中获取RAM用户AccessKey ID",
"建议从环境变量中获取RAM用户AccessKey Secret");
DefaultProfile.addEndpoint("cn-shanghai", "Green", "green.cn-shanghai.aliyuncs.com");
// 注意:此处实例化的client尽可能重复使用,提升检测性能。避免重复建立连接。
IAcsClient client = new DefaultAcsClient(profile);
ImageSyncScanRequest imageSyncScanRequest = new ImageSyncScanRequest();
imageSyncScanRequest.setAcceptFormat(FormatType.JSON); // 指定API返回格式。
imageSyncScanRequest.setMethod(com.aliyuncs.http.MethodType.POST); // 指定请求方法。
imageSyncScanRequest.setEncoding("utf-8");
imageSyncScanRequest.setRegionId("cn-shanghai");
List<Map<String, Object>> tasks = new ArrayList<Map<String, Object>>();
Map<String, Object> task = new LinkedHashMap<String, Object>();
task.put("dataId", UUID.randomUUID().toString());
task.put("url", "https://example.com/tfs/xxx-550-407.jpg");
task.put("time", new Date());
Map<String, String> extras = new HashMap<String, String>();
extras.put("groupId", "java_sdk_test_group");
task.put("extras", extras);
tasks.add(task);
JSONObject data = new JSONObject();
/**
* sface-n: 人脸1-N
*/
data.put("scenes", Arrays.asList("sface-n"));
data.put("tasks", tasks);
imageSyncScanRequest.setHttpContent(data.toJSONString().getBytes("UTF-8"), "UTF-8", FormatType.JSON);
/**
* 请务必设置超时时间。
*/
imageSyncScanRequest.setConnectTimeout(3000);
imageSyncScanRequest.setReadTimeout(6000);
try {
HttpResponse httpResponse = client.doAction(imageSyncScanRequest);
if (httpResponse.isSuccess()) {
JSONObject scrResponse = JSON.parseObject(new String(httpResponse.getHttpContent(), "UTF-8"));
System.out.println(JSON.toJSONString(scrResponse, true));
if (200 == scrResponse.getInteger("code")) {
JSONArray taskResults = scrResponse.getJSONArray("data");
for (Object taskResult : taskResults) {
if(200 == ((JSONObject)taskResult).getInteger("code")){
JSONArray sceneResults = ((JSONObject)taskResult).getJSONArray("results");
for (Object sceneResult : sceneResults) {
String scene = ((JSONObject)sceneResult).getString("scene");
String suggestion = ((JSONObject)sceneResult).getString("suggestion");
// 根据scene和suggestion做相关的处理。
System.out.println("args = [" + scene + "]");
System.out.println("args = [" + suggestion + "]");
}
}else{
System.out.println("task process fail:" + ((JSONObject)taskResult).getInteger("code"));
}
}
} else {
System.out.println("detect not success. code:" + scrResponse.getInteger("code"));
}
} else {
System.out.println("response not success. status:" + httpResponse.getStatus());
}
} catch (ServerException e) {
e.printStackTrace();
} catch (ClientException e) {
e.printStackTrace();
} catch (Exception e){
e.printStackTrace();
}
}
}
人脸图片检索(本地文件)代码示例
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.green.model.v20180509.ImageSyncScanRequest;
import com.aliyuncs.http.FormatType;
import com.aliyuncs.http.HttpResponse;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;
import com.aliyuncs.green.extension.uploader.ClientUploader;
/**
* 人脸检索(本地文件)。
*/
public class FaceScanLocalSample {
public static void main(String[] args) throws Exception {
/**
* 阿里云账号AccessKey拥有所有API的访问权限,建议您使用RAM用户进行API访问或日常运维。
* 常见获取环境变量方式:
* 方式一:
* 获取RAM用户AccessKey ID:System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
* 获取RAM用户AccessKey Secret:System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
* 方式二:
* 获取RAM用户AccessKey ID:System.getProperty("ALIBABA_CLOUD_ACCESS_KEY_ID");
* 获取RAM用户AccessKey Secret:System.getProperty("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
*/
DefaultProfile profile = DefaultProfile.getProfile(
"cn-shanghai",
"建议从环境变量中获取RAM用户AccessKey ID",
"建议从环境变量中获取RAM用户AccessKey Secret");
DefaultProfile.addEndpoint("cn-shanghai", "Green", "green.cn-shanghai.aliyuncs.com");
// 注意:此处实例化的client尽可能重复使用,提升检测性能。避免重复建立连接。
IAcsClient client = new DefaultAcsClient(profile);
ImageSyncScanRequest imageSyncScanRequest = new ImageSyncScanRequest();
imageSyncScanRequest.setAcceptFormat(FormatType.JSON); // 指定API返回格式。
imageSyncScanRequest.setMethod(com.aliyuncs.http.MethodType.POST); // 指定请求方法。
imageSyncScanRequest.setEncoding("utf-8");
imageSyncScanRequest.setRegionId("cn-shanghai");
ClientUploader uploader = ClientUploader.getImageClientUploader(profile, false);
String url = null;
try {
url = uploader.uploadFile("d:/image.jpg");
} catch (Exception e) {
e.printStackTrace();
}
List<Map<String, Object>> tasks = new ArrayList<Map<String, Object>>();
Map<String, Object> task = new LinkedHashMap<String, Object>();
task.put("dataId", UUID.randomUUID().toString());
task.put("url", url);
task.put("time", new Date());
Map<String, String> extras = new HashMap<String, String>();
extras.put("groupId", "java_sdk_test_group");
task.put("extras", extras);
tasks.add(task);
JSONObject data = new JSONObject();
/**
* sface-n: 人脸1-N。
*/
data.put("scenes", Arrays.asList("sface-n"));
data.put("tasks", tasks);
imageSyncScanRequest.setHttpContent(data.toJSONString().getBytes("UTF-8"), "UTF-8", FormatType.JSON);
/**
* 请务必设置超时时间。
*/
imageSyncScanRequest.setConnectTimeout(3000);
imageSyncScanRequest.setReadTimeout(6000);
try {
HttpResponse httpResponse = client.doAction(imageSyncScanRequest);
if (httpResponse.isSuccess()) {
JSONObject scrResponse = JSON.parseObject(new String(httpResponse.getHttpContent(), "UTF-8"));
System.out.println(JSON.toJSONString(scrResponse, true));
if (200 == scrResponse.getInteger("code")) {
JSONArray taskResults = scrResponse.getJSONArray("data");
for (Object taskResult : taskResults) {
if (200 == ((JSONObject) taskResult).getInteger("code")) {
JSONArray sceneResults = ((JSONObject) taskResult).getJSONArray("results");
for (Object sceneResult : sceneResults) {
String scene = ((JSONObject) sceneResult).getString("scene");
String suggestion = ((JSONObject) sceneResult).getString("suggestion");
// 根据scene和suggestion做相关的处理。
System.out.println("args = [" + scene + "]");
System.out.println("args = [" + suggestion + "]");
}
} else {
System.out.println("task process fail:" + ((JSONObject) taskResult).getInteger("code"));
}
}
} else {
System.out.println("detect not success. code:" + scrResponse.getInteger("code"));
}
} else {
System.out.println("response not success. status:" + httpResponse.getStatus());
}
} catch (ServerException e) {
e.printStackTrace();
} catch (ClientException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
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